I am trying to repair a computer given to me. This is a Dell Optiplex GX260,(BM2GZ21).
The light on the mother board is on, also the a,b,c,d lights on the back of the tower are (a,b,c,)3 green and (d) is yellow. There are 2 beeps when the tower is turned on, the DOS/Bios window loads, but windows operating system does not, then it gives a error message saying (A disk read error occured). I can access the set up menu(F2) and Boot menu(F12).
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It is almost impossible to upgrade proprietary makes like Dell and HP. The are big enough to have motherboards made for them manufactured on price point. This means that they are not built with upgrade in mind. Also the cases are made to fit their motherboard and theirs only.
Go to a computer builder and get a good case, buy a good quality motherboard and equip it with what you can afford. In two years you can upgrade as processors have moved on. Two years after that, you can swap out the motherboard, processor and memory.
I would suggest you try safe mode.
Safe mode is a troubleshooting option for Windows that starts your computer in a limited state. Only the basic files and drivers necessary to run Windows are started. The words "Safe Mode" appear in the corners of the display to identify which Windows mode you are using. If an existing problem does not reappear when you start in safe mode, you can eliminate the default settings and basic device drivers as possible causes.
If you don't know the cause of the problem, you can use the process of elimination to help you find the problem. Try starting all of the programs you commonly use, including the programs in your Startup folder, one by one, to see if a program might be the cause of the problem.
Follow the steps to boot the computer in safe mode with networking:
1. Restart your computer if it is powered on.
2. Tap the F8 key after your computer initially powers on.
3. Once you see the Advanced Boot Options menu you can stop tapping.
4. Use the up/down arrow keys to highlight your selection.
5. Select Safe Mode with Networking and press Enter.
6. You should see drivers loading, and then please wait.
7. You should then be at the Welcome Screen.
8. Logon to your computer using an account with Administrator privileges.
If you have a Windows OS, press and hold the ALT and CTRL (control) keys and then press the Up arrow. (If that doesn't work, try holding the Alt and CTRL keys and pressing the left (or right) arrow key twice.) If that fails, right click on the desktop (Windows+D will minimize all programs), anywhere with no running programs or icons. Then select the Screen Resolution option. Look for the line Orientation; use the drop down menu to select the correct orientation. Click Apply and then confirm the setting change if a confirmation window pops up. (This works in Windows 7 and 8.) For older Windows versions on laptops, you may need to select Graphics Properties (or a similar line) and then repeat this. The Windows screen rotation option is dependent on your video card. With some models, you'll need to open the graphics card properties to undo the rotation. You should see a line for the graphics adapter when you right click on the Display.
For Macintosh OS, make sure that the System Preferences is closed. Then open it by pressing Option/alt + CMD . Select the line Display. Find the button labeled Rotation: Standard then choose the correct screen orientation.
I had a similar problem and I had to "Delete Volume" when in DIsk Management. I then had a choice to "Create Simple Volume" which I did, and then a wizard created the correct partitions and assigned a drive letter to my external drive. Everything was them OK.
check that all removable media is removed from computer, flash drives etc,if this message still appears the reinstall your os, there are several reasons for this error. You may have to replace your hard drive if that is the issue- you would know because after reinstall (if it makes it thru it) it will only crash again, this is much too big of a subject to sum it all up here and now, good luck... more questions just ask
Please download the ERD Winternal Image from http://www.mininova.org/tor/857048 and burn it in a CD. Thenboot your PC from the CD. Select your Windows Media Edition for whichyou have forgot password. Without asking for any password you will getinto Windows. Then goto control panel->User Accounts->Select theUsername[for which u want to change password]. Then use change passwordoption to change password. Then Reboot the PC and remove the CD. Nowyour windows password will be reset. Thanks.