[StuartM39]

I have an ACER Aspire 9815WKHI running Windows Vista Ultimate.

- Intel Core 2 Duo Processor T7200
(2.0 Ghz, 667 Mhz FSB, 4MB L2 Cache)
- 20.1 WSXGA+ Crystalbrite LCD
- Up to 528MB NVIDIA GeForce Go 7600
- 3GB DDR2

Its been having boot problems for about a week now, the pale ACER logo screen appears then goes to a blank screen, also the BIOS setting option dont appear (F2) so I cant get into BIOS. i've been looking around for solutions such as re-seating the RAM, putting the BIOS update on a flash pen drive and booting up holding the FN + ESC keys and tried the ACER Boot disc but none seem to be working. I have a LINUX disc (UBUNTU) it runs from the disc only so it does not affect my machine. It first starts up with the options:

1, Try Ubuntu without any change to your computer
2, Install Ubuntu
3, Check disc for defects
4, Test Memory
5, Boot from first hard disk (I tried this and it just goes to a blank screen)

It also has F function options:

F1 = Help
F2 = Language
F3 = Keymap
F4 = Modes
F5 = Accessibility
F6 = Other Options

"Press F4 to select alternative start-up and installation modes"

I select the first option "Try Ubuntu"

It runs the Ubuntu load up sequence (takes awhile) then it checks if everything is [OK]. After this sequence a Error Caution message appears saying:

"Ubuntu is running in low-graphics mode"
The following error was encountered. You may need to update your configuration to solve this.

(EE) NV(0): No valid FB address in PCI config space
(EE) Screen(s) found, but none have a usable configuration.

The only option i get is to click OK. Then it comes up with a menu saying

"What would you like to do?"

1, Run Ubuntu in low-graphics mode for just one session
2, Reconfigure graphics
3, Troubleshoot the error
4, Exit to console login

I ran the first option and a blue screen pops up saying:

"there already appears to be an X server running on display :0. Should another display number by tried? Answering no will cause GDM to attempt starting the server on :0 again. (You can change consoles by pressing Ctrl-Alt plus a function key, such as Ctrl-Alt-F7 to go to console 7. X servers usually run on console 7 and higher)"

I press yes and Ubuntu loads. I looked in Hardware Drivers, it comes up with three drivers:

1, NVIDIA accelerated graphics driver (version 180) [Recommended]
2, NVIDIA accelerated graphics driver (version 173)
3, NVIDIA accelerated graphics driver (version 96)

None of them are Activated and it won't let me activate them. It does state "No proprietary drivers are in use on this system".

I restarted to get back to the options above and chose the third option "Troubleshoot the error". It comes up with more options:

What information would you like to review?

1, Review the xserver log file
2, Review the startup errors
3, Edit configuration file
4, Archive configuration and logs

I clicked option two and one error was found

"Fatal Server Error: No screens found".

I am not sure where or what to do next to get me back to Windows Vista Ultimate. Can someone please help me and many thanks in advance.

I hope the information I gave here is understandable. If you need anymore information please ask.