You may need to roll back system with System Restore. Under Safe Mode (press F8 during boot and choose Safe Mode). Now got to Start > All Programs > Accessories > System Restore. Now choose a date prior to problem. You may have to try a few dates.
Try uninstall last program(s) that was installed, again in safe mode.
Run a thorough virus check. Then try System File Checker. It finds and replaces corrupted system files. This requires a Windows XP disc. Go to Start > run > type cmd ENTER. At command prompt type sfc / scannow ENTER.
Re-install Windows. Clean install works best, but all data will be lost.
Thanks for your lovely advice and answer. The problem is still there. I just tried F8 and it worked and I started in Safe Mode. Once in safe mode, the screen goes black and on four corner's of the screen, it is flashing in mode Safe Mode but then, there is nothing happening. I can see a white light flashing continuously in front of the laptop. Please see, if there is any way, I can get back my computer. Thanks once again. Salim Oct. 15, 2012.
Re-install Windows. Clean install works best, but all data will be lost. Hope this will fix it, or else there may be bigger problems.
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A full system install is needed. You will lose data already on the system so back up all data first, I would advise to do it to some form of online storage. When you start the computer and see the logo press alt and f10. This will take you to the manufactures system install screen. Simply choose the platform and click install
SOURCE: cant see desktop screen
Try this if your problem sounds the same or similar:
I purchased the HP-Compaq C765TU Presario, serial # CND81233B5, from Octagon Computers. My notebook came with only "Freedos" because I was going to Dual-boot Windows XP Professional & Linux, but I found out that my notebook is only “Vista Compatible,” because I could not find the drivers for the sound card & Atheros wireless adapter & the Linux I used, Ubuntu does not have all the drivers needed, so I uninstalled, & I added the only Windows Vista OS that I could get here at Octagon Computers in Tacloban City, Leyte, Philippines, “Windows Vista Starter!” (I’m an American married to a beautiful Filipino woman 1 year younger than me, & we are living in the Philippines. I’m, also, Retired USAF.) I went to the HP-Compaq site & downloaded all the new drivers and essential update for my notebook to make sure my notebook was as it should be by HP-Compaq standards. All is well, but only for a little while!
The first problem that I encountered was that after I would Logon, the Welcome screen would do its processing then go to a blank desktop with the cursor - no icons, no taskbar, nothing, so I used “control, alt, delete” to bring up the tasks page & started Task Manager. I found that the “Explorer.exe” was not listed, so I ran a “New Task” from the file menu, & my whole desktop came up. The notebook runs fine after this is done, but I had to do it all the time.
So, I found & bought a copy of Windows Vista Ultimate on the Internet & was forced to do a clean install because it was a full version (not an upgrade), which formatted my Hard-drive, but I had backed up all my files ahead of time, so as to not lose all my important data. I went back to HP-Compaq site & downloaded all the new drivers and essential update to make sure my notebook was as it should be by HP-Compaq standards. After doing this New Install, my notebook worked perfectly! However, the same problem has come back as I had with Windows Vista starter.
I have always used Anti-virus, and I run “System Mechanic Professional 8” because it has all the tools needed to seek & destroy viruses, spybots, etc…, & recover/repair data.
I have never had this problem with Windows XP Professional, but this laptop is designed for Vista, and I didn't know that before I bought it. I'm still looking for a permanent FIX. There must be a way to fix this problem permanently!
SOURCE: Acer Aspire One not starting
Corrupt Bios, http://ezinearticles.com/?Acer-Aspire-One-BIOS-Recovery&id=1815776 this fixed mine
Keith
SOURCE: Can't see anything on the screen
This has happened to me .. this is the fix ..
http://www.qrpcw.com/2009/01/acer-aspire-one-bios-recovery.html
Regards,
Barry Heap
SOURCE: Acer Aspire One
Try to use different hard disk and put it on your machine. If it works, i suspected your OS is corrupted. You might need to reformat your hard drive. Before reformatting you need to back up all your files because everything will be deleted and set up to defaulty factory settings.
SOURCE: Toggle Between Laptop and Monitor
Fn + F5 toggles the display output, the trick here to wait each time you hit this combination because it goes through several options. Hit it once and it may want to go to just the external, then both the laptop screen and the external. etc. Now Fn + F6 turns the backlight bulb off on the internal monitor to save energy. Now I am giving up the link to your service manual, it is in PDF format so you can make a copy for yourself and keep on the laptop, print it or save it to a flash so you can reference it later. I believe if you take the keyboard off and disconnect the video lead on the left side where the display plugs into the motherboard, then when you power the laptop back up it will default to the external cord and you can use the laptop without any switching. That is what I am doing with an Aspire 5920 that I am rebuilding. Good luck, ParrotHead PC Repair
Just copy and paste the link below to you internet address bar and hit enter.
http://tim.id.au/laptops/acer/aspire%203680%205570%205580.pdf
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