Lupa dengan Password Windows 7 Anda?

Damn!! Awal tahun 2016 ini sempat diawali dengan satu insiden kecil. Pagi-pagi buka laptop dan password login Windows 7 tidak diterima alias incorrect! Mau gak mau mesti reset password. Malam sebelumnya saya memang sempat mengganti password saya namun saya lupa dengan password barunya :D. Alhamdulillah, CD Installernya gampang dicari--biasanya mah barang-barang suka ngumpet di mana pas lagi dibutuhin :D.

Well, bagi temen-temen yang ngalamin hal yang sama, tulisan ini mungkin bisa jadi referensi. Sebenernya ada cara-cara lain untuk mereset password login Windows 7 selain dengan menggunakan CD Installer. Di antaranya adalah dengan menggunakan backup password. Backup password ini kita buat dan simpan pada USB drive. Saat kita tidak bisa mengakses Windows 7 karena password login bermasalah, kita tinggal mencolokkannya. Sayang, saya belum sempat membuat backup password untuk login saya tersebut. Selain itu, bagi yang familiar juga dengan Ubuntu, melakukan reset password login Windows 7 bisa juga dengan menggunakan CD live OS Linux ini.

Baiklah, untuk cara-cara mereset password login Windows 7 lainnya, insya Allah akan saya tulis pada kesempatan berikutnya (atau jika Anda ingin mengetahuinya sekarang, silahkan tanya ke mbah Gugel :D). Sekarang akan saya lanjutkan dengan langkah-langkah mereset password menggunakan CD Installer Windows 7.

Pertama, untuk hal ini, kita berarti harus melakukan booting menggunakan CD Installer (seperti langkah saat kita akan menginstal Windows). CD Installer ini kita perlukan bukan untuk menginstal ulang Windows 7. Tapi untuk mengaktifkan window Command Prompt pada halaman login Windows karena secara default kita tidak bisa mengakses atau membuka window Command Prompt pada halaman login Windows. Ya, sebenarnya kita akan melakukan reset paswword-nya menggunakan Command Prompt ;).

Oke, setelah booting selesai, silahkan ikuti langkah-langkah berikut ini:

Seperti pada gambar di atas, pilih menu Repair your computer dan tunggu hingga muncul window seperti di bawah ini:

Pilih OS Windows 7 yang bersangkutan (jika di laptop atau komputer kita terinstal lebih dari 1 OS Windows) lalu klik Next > 

Pilih Command Prompt, hingga terbuka window Command Prompt seperti di bawah ini:

Seperti telah saya jelaskan di atas, bahwa kita menggunakan CD Installer Windows 7 fungsinya tidak lain untuk menjadikan window Command Prompt dapat diakses saat pertama kali Windows 7 nyala, karena melalui Command Prompt inilah kita akan melakukan reset password.

By the way, Windows menempatkan sebuah aplikasi bernama sethc.exe pada system32. Aplikasi ini dapat dibuka dan dijalankan saat pertama kali Windows running (kita masih berada di halaman login). sethc.exe berfungsi untuk mengatur Sticky Keys (misal Ctrl+Alt+Del untuk membuka halaman login saat iddle) terutama bagi kita yang mengalami keterbatasan menekan beberapa tombol secara bersamaan. Namun, sethc.exe ini sebenarnya bisa berupa aplikasi apa saja asal bernama sethc.exe dan berlokasi di system32. Untuk memanggil sethc.exe sendiri cukup dengan menekan tombol Shift sebanyak 5 kali. Nah, trik inilah yang akan kita gunakan. Jadi, kita akan mengganti aplikasi sethc.exe tersebut dengan aplikasi cmd.exe agar saat kita menekan Shift 5 kali pada halaman login, window Command Prompt-lah yang akan terbuka ;).

Pertama, kita 'aman'-kan dulu file sethc.exe, kita copy ke folder utama (C:), dengan mengetikkan baris di bawah ini:

copy c:\windows\system32\sethc.exe c:\

Catatan: Silahkan ganti C: dengan D: atau lainnya yang merupakan lokasi Windows 7 diinstal (sebagaimana ditunjukkan pada gambar System Recovery Options di atas).

Kedua, kita tiban file sethc.exe dengan file cmd.exe yang juga berada di system32:

copy c:\windows\system32\cmd.exe c:\windows\system32\sethc.exe

Ketik Yes saat muncul konfirmasi overwrite file.

Setelah selesai, ketik exit untuk menutup window Command Prompt lalu klik Restart pada System Recovery Options untuk masuk kembali ke Windows 7.

Setelah restart selesai dan kita telah berada di halaman login Windows, klik tombol Shift 5 kali untuk membuka window Command Prompt seperti di bawah ini:

Untuk mengganti password, ketik:

net user Username NewPassword

Username adalah nama user kita, sementara NewPassword adalah password baru yang akan kita gunakan. Gunakan tanda petik ("") jika Username mengandung spasi. Jika kita tidak yakin atau lupa dengan ejaan Username kita, kita bisa mengetikkan net user saja terlebih dahulu maka akan muncul nama-nama user yang terdaftar. Misal Username kita adalah Lorem Ipsum dan password baru yang akan kita gunakan adalah abrakadabra, maka kita ketik:

net user "Lorem Ipsum" abrakadabra

Setelah berhasil, ketik exit untuk menutup window Command Prompt dan kitapun bisa login kembali dengan password baru yang telah kita buat :).

Demikian, mudah-mudahan tulisan di atas bisa menjadi 'kado' tahun baru bermanfaat. Selamat Tahun Baru 2016 :)

Mengatasi Error Grub: "No Such Partition"

Bagi Anda yang menggunakan 'dual boot' sistem operasi (Windows dan Linux Ubuntu), mungkin Anda pernah, atau sedang mengalami masalah (biasanya setelah menambah atau menghapus partisi dari Windows) di mana saat menjalankan komputer atau laptop, tidak muncul daftar sistem operasi yang biasa ditampilkan oleh GRUB (Grand Unified Bootloader)-nya Ubuntu melainkan dua baris berikut:

error: no such partition.

grub rescue>

Ya, error ini muncul karena dengan ditambahkan atau dihapusnya partisi, posisi partisi Ubuntu menjadi tergeser, sehingga posisi bootloader (dalam hal ini GRUB) yang telah terekam pada MBR (Master Boot Record) komputer tidak lagi valid. Untuk mengatasinya, mula-mula kita lihat daftar partisi yang ada pada komputer dengan mengetikkan perintah 'ls':

grub rescue> ls

Hasilnya akan muncul daftar seperti di bawah ini:

(hd0)   (hd0,msdos7)   (hd0,msdos6)   (hd0,msdos5)   (hd0,msdos1)

Sekarang, coba cek masing-masing partisi, untuk mengetahui keberadaan Ubuntu dengan mengetikkan perintah 'ls (hdx,y)', misalnya:

grub rescue> ls (hd0,5)

Jika yang muncul sebagai berikut:

error: unknown filesystem.

maka isi partisi tersebut bukanlah Ubuntu. Coba lagi misalnya:

grub rescue> ls (hd0,6)

Jika yang muncul seperti berikut:

./  ../  lost+found/  etc/  media/  bin/  boot/  dev/  home/  lib/  ...

Maka berarti Ubuntu ada di partisi ini. Jika demikian, kita bisa melanjutkan dengan memanggil kembali GRUB dengan mengetikkan satu per satu baris-baris perintah berikut:

grub rescue> set prefix=(hd0,6)/boot/grub

grub rescue> set root=(hd0,6)

grub rescue> insmod normal

grub rescue> normal

Setelah itu, komputer akan kembali normal seperti biasa. Daftar pilihan sistem operasi akan muncul kembali.

Namun, ... ini belum selesai. Jika setelah ini Anda langsung menggunakan komputer Anda seperti biasa hingga Anda melakukan shutdown atau restart komputer, maka setelah komputer aktif kembali, error grub ini akan muncul kembali. Sebab, perintah di atas hanya digunakan untuk memanggil GRUB sekali itu. Untuk itu, agar nantinya GRUB bisa muncul dengan sendirinya seperti semula, Anda perlu mendaftarkan ulang GRUB. Caranya, masuk ke Ubuntu. Buka Terminal lalu ketik satu per satu dua baris perintah berikut:

sudo update-grub

sudo grub-install /dev/sda

Finished. :)

Excel Shortcut And Function Keys

Key	Description
CTRL+SHIFT+(	Unhides any hidden rows within the selection.
CTRL+SHIFT+)	Unhides any hidden columns within the selection.
CTRL+SHIFT+&	Applies the outline border to the selected cells.
CTRL+SHIFT_	Removes the outline border from the selected cells.
CTRL+SHIFT+~	Applies the General number format.
CTRL+SHIFT+$	Applies the Currency format with two decimal places (negative numbers in parentheses).
CTRL+SHIFT+%	Applies the Percentage format with no decimal places.
CTRL+SHIFT+^	Applies the Exponential number format with two decimal places.
CTRL+SHIFT+#	Applies the Date format with the day, month, and year.
CTRL+SHIFT+@	Applies the Time format with the hour and minute, and AM or PM.
CTRL+SHIFT+!	Applies the Number format with two decimal places, thousands separator, and minus sign (-) for negative values.
CTRL+SHIFT+*	Selects the current region around the active cell (the data area enclosed by blank rows and blank columns). In a PivotTable, it selects the entire PivotTable report.
CTRL+SHIFT+:	Enters the current time.
CTRL+SHIFT+"	Copies the value from the cell above the active cell into the cell or the Formula Bar.
CTRL+SHIFT+Plus (+)	Displays the Insert dialog box to insert blank cells.
CTRL+Minus (-)	Displays the Delete dialog box to delete the selected cells.
CTRL+;	Enters the current date.
CTRL+`	Alternates between displaying cell values and displaying formulas in the worksheet.
CTRL+'	Copies a formula from the cell above the active cell into the cell or the Formula Bar.
CTRL+1	Displays the Format Cells dialog box.
CTRL+2	Applies or removes bold formatting.
CTRL+3	Applies or removes italic formatting.
CTRL+4	Applies or removes underlining.
CTRL+5	Applies or removes strikethrough.
CTRL+6	Alternates between hiding objects, displaying objects, and displaying placeholders for objects.
CTRL+8	Displays or hides the outline symbols.
CTRL+9	Hides the selected rows.
CTRL+0	Hides the selected columns.
CTRL+A	Selects the entire worksheet. If the worksheet contains data, CTRL+A selects the current region. Pressing CTRL+A a second time selects the current region and its summary rows. Pressing CTRL+A a third time selects the entire worksheet. When the insertion point is to the right of a function name in a formula, displays the Function Arguments dialog box.
CTRL+SHIFT+A	inserts the argument names and parentheses when the insertion point is to the right of a function name in a formula.
CTRL+B	Applies or removes bold formatting.
CTRL+C	Copies the selected cells. CTRL+C followed by another CTRL+C displays the Clipboard.
CTRL+D	Uses the Fill Down command to copy the contents and format of the topmost cell of a selected range into the cells below.
CTRL+F	Displays the Find and Replace dialog box, with the Find tab selected. SHIFT+F5 also displays this tab, while SHIFT+F4 repeats the last Find action. CTRL+SHIFT+F opens the Format Cells dialog box with the Font tab selected.
CTRL+G	Displays the Go To dialog box. F5 also displays this dialog box.
CTRL+H	Displays the Find and Replace dialog box, with the Replace tab selected.
CTRL+I	Applies or removes italic formatting.
CTRL+K	Displays the Insert Hyperlink dialog box for new hyperlinks or the Edit Hyperlink dialog box for selected existing hyperlinks.
CTRL+N	Creates a new, blank workbook.
CTRL+O	Displays the Open dialog box to open or find a file. CTRL+SHIFT+O selects all cells that contain comments.
CTRL+P	Displays the Print dialog box. CTRL+SHIFT+P opens the Format Cells dialog box with the Font tab selected.
CTRL+R	Uses the Fill Right command to copy the contents and format of the leftmost cell of a selected range into the cells to the right.
CTRL+S	Saves the active file with its current file name, location, and file format.
CTRL+T	Displays the Create Table dialog box.
CTRL+U	Applies or removes underlining. CTRL+SHIFT+U switches between expanding and collapsing of the formula bar.
CTRL+V	Inserts the contents of the Clipboard at the insertion point and replaces any selection. Available only after you have cut or copied an object, text, or cell contents.
CTRL+W	Closes the selected workbook window.
CTRL+X	Cuts the selected cells.
CTRL+Y	Repeats the last command or action, if possible.
CTRL+Z	Uses the Undo command to reverse the last command or to delete the last entry that you typed. CTRL+SHIFT+Z uses the Undo or Redo command to reverse or restore the last automatic correction when AutoCorrect Smart Tags are displayed.
F1	Displays the Microsoft Office Excel Help task pane. CTRL+F1 displays or hides the ribbon. ALT+F1 creates a chart of the data in the current range. ALT+SHIFT+F1 inserts a new worksheet.
F2	Edits the active cell and positions the insertion point at the end of the cell contents. It also moves the insertion point into the Formula Bar when editing in a cell is turned off. SHIFT+F2 adds or edits a cell comment. CTRL+F2 displays the Print Preview window.
F3	Displays the Paste Name dialog box. SHIFT+F3 displays the Insert Function dialog box.
F4	Repeats the last command or action, if possible. CTRL+F4 closes the selected workbook window.
F5	Displays the Go To dialog box. CTRL+F5 restores the window size of the selected workbook window.
F6	Switches between the worksheet, ribbon, task pane, and Zoom controls. In a worksheet that has been split (View menu, Manage This Window, Freeze Panes, Split Window command), F6 includes the split panes when switching between panes and the ribbon area. SHIFT+F6 switches between the worksheet, Zoom controls, task pane, and ribbon. CTRL+F6 switches to the next workbook window when more than one workbook window is open.
F7	Displays the Spelling dialog box to check spelling in the active worksheet or selected range. CTRL+F7 performs the Move command on the workbook window when it is not maximized. Use the arrow keys to move the window, and when finished press ENTER, or ESC to cancel.
F8	Turns extend mode on or off. In extend mode, Extended Selection appears in the status line, and the arrow keys extend the selection. SHIFT+F8 enables you to add a nonadjacent cell or range to a selection of cells by using the arrow keys. CTRL+F8 performs the Size command (on the Control menu for the workbook window) when a workbook is not maximized. ALT+F8 displays the Macro dialog box to create, run, edit, or delete a macro.
F9	Calculates all worksheets in all open workbooks. SHIFT+F9 calculates the active worksheet. CTRL+ALT+F9 calculates all worksheets in all open workbooks, regardless of whether they have changed since the last calculation. CTRL+ALT+SHIFT+F9 rechecks dependent formulas, and then calculates all cells in all open workbooks, including cells not marked as needing to be calculated. CTRL+F9 minimizes a workbook window to an icon.
F10	Turns key tips on or off. SHIFT+F10 displays the shortcut menu for a selected item. ALT+SHIFT+F10 displays the menu or message for a smart tag. If more than one smart tag is present, it switches to the next smart tag and displays its menu or message. CTRL+F10 maximizes or restores the selected workbook window.
F11	Creates a chart of the data in the current range. SHIFT+F11 inserts a new worksheet. ALT+F11 opens the Microsoft Visual Basic Editor, in which you can create a macro by using Visual Basic for Applications (VBA).
F12	Displays the Save As dialog box.
ARROW KEYS	Move one cell up, down, left, or right in a worksheet. CTRL+ARROW KEY moves to the edge of the current data region (data region: A range of cells that contains data and that is bounded by empty cells or datasheet borders.) in a worksheet. SHIFT+ARROW KEY extends the selection of cells by one cell. CTRL+SHIFT+ARROW KEY extends the selection of cells to the last nonblank cell in the same column or row as the active cell, or if the next cell is blank, extends the selection to the next nonblank cell. LEFT ARROW or RIGHT ARROW selects the tab to the left or right when the ribbon is selected. When a submenu is open or selected, these arrow keys switch between the main menu and the submenu. When a ribbon tab is selected, these keys navigate the tab buttons. DOWN ARROW or UP ARROW selects the next or previous command when a menu or submenu is open. When a ribbon tab is selected, these keys navigate up or down the tab group. In a dialog box, arrow keys move between options in an open drop-down list, or between options in a group of options. DOWN ARROW or ALT+DOWN ARROW opens a selected drop-down list.
BACKSPACE	Deletes one character to the left in the Formula Bar. Also clears the content of the active cell. In cell editing mode, it deletes the character to the left of the insertion point.
DELETE	Removes the cell contents (data and formulas) from selected cells without affecting cell formats or comments. In cell editing mode, it deletes the character to the right of the insertion point.
END	Moves to the cell in the lower-right corner of the window when SCROLL LOCK is turned on. Also selects the last command on the menu when a menu or submenu is visible. CTRL+END moves to the last cell on a worksheet, in the lowest used row of the rightmost used column. If the cursor is in the formula bar, CTRL+END moves the cursor to the end of the text. CTRL+SHIFT+END extends the selection of cells to the last used cell on the worksheet (lower-right corner). If the cursor is in the formula bar, CTRL+SHIFT+END selects all text in the formula bar from the cursor position to the end—this does not affect the height of the formula bar.
ENTER	Completes a cell entry from the cell or the Formula Bar, and selects the cell below (by default). In a data form, it moves to the first field in the next record. Opens a selected menu (press F10 to activate the menu bar) or performs the action for a selected command. In a dialog box, it performs the action for the default command button in the dialog box (the button with the bold outline, often the OK button). ALT+ENTER starts a new line in the same cell. CTRL+ENTER fills the selected cell range with the current entry. SHIFT+ENTER completes a cell entry and selects the cell above.
ESC	Cancels an entry in the cell or Formula Bar. Closes an open menu or submenu, dialog box, or message window. It also closes full screen mode when this mode has been applied, and returns to normal screen mode to display the Ribbon and status bar again.
HOME	Moves to the beginning of a row in a worksheet. Moves to the cell in the upper-left corner of the window when SCROLL LOCK is turned on. Selects the first command on the menu when a menu or submenu is visible. CTRL+HOME moves to the beginning of a worksheet. CTRL+SHIFT+HOME extends the selection of cells to the beginning of the worksheet.
PAGE DOWN	Moves one screen down in a worksheet. ALT+PAGE DOWN moves one screen to the right in a worksheet. CTRL+PAGE DOWN moves to the next sheet in a workbook. CTRL+SHIFT+PAGE DOWN selects the current and next sheet in a workbook.
PAGE UP	Moves one screen up in a worksheet. ALT+PAGE UP moves one screen to the left in a worksheet. CTRL+PAGE UP moves to the previous sheet in a workbook. CTRL+SHIFT+PAGE UP selects the current and previous sheet in a workbook.
SPACEBAR	In a dialog box, performs the action for the selected button, or selects or clears a check box. CTRL+SPACEBAR selects an entire column in a worksheet. SHIFT+SPACEBAR selects an entire row in a worksheet. CTRL+SHIFT+SPACEBAR selects the entire worksheet. If the worksheet contains data, CTRL+SHIFT+SPACEBAR selects the current region. Pressing CTRL+SHIFT+SPACEBAR a second time selects the current region and its summary rows. Pressing CTRL+SHIFT+SPACEBAR a third time selects the entire worksheet. When an object is selected, CTRL+SHIFT+SPACEBAR selects all objects on a worksheet. ALT+SPACEBAR displays the Control menu for the Microsoft Office Excel window.
TAB	Moves one cell to the right in a worksheet. Moves between unlocked cells in a protected worksheet. Moves to the next option or option group in a dialog box. SHIFT+TAB moves to the previous cell in a worksheet or the previous option in a dialog box. CTRL+TAB switches to the next tab in dialog box. CTRL+SHIFT+TAB switches to the previous tab in a dialog box.