How can i fix my laptop?

XP is a more versatile and stable OS than Vista....
so it's better to keep XP as the default OS in C:
once XP is booted and you get Desktop of XP
install Vista in another partition staying in Windows XP....
you may have re-format your HD and all drives in that...
then create different partitions as per your needs and then go ahead doing it....
not to remind you to take back up of all critical data before you do it...
for more info
get to my site www.sureshayyar.110mb.com and get info on disk format and install of XP

reg

Minimum System Requirements
OS – Windows XP or Windows Vista
Processor – 2.8 GHz or faster (XP) or 3.2 GHz or faster* (Vista)
Memory – 1.0 GB RAM (XP) or 1.5 GB RAM (Vista)
Video Card –256 MB**
Hard Drive – 12GB
Sound Card – DirectX 9.0c compatible
* Supported Processors: Intel Pentium 4 2.8 GHz (3.2 GHz for Vista) or faster, Intel Core 2.0 GHz (2.2 GHz for Vista) or faster, AMD Athlon 2800+ (3200+ for Vista) or faster.
** Supported chipsets: NVIDIA GeForce 6800 GT or greater; ATI Radeon 9800 Pro (Radeon X800 Pro for Vista) or greater. Laptop versions of these chipsets may work but are not supported. Integrated chipsets are not supported. Updates to your video and sound card drivers may be required.
Recommended System Requirements
OS – Windows XP / Vista
Processor – Intel Core 2 DUO @ 2.2GHz or AMD Athlon 64 X2 4400+
Memory – 2.0 GB RAM
GPU – NVIDIA GeForce 8800 GTS/640 or similar

Check for proper drivers used, check for compatibilituy if using windows vista.

its better if you should use the vista , or try change the state of hard drive , disable sata

You need to download the latest drivers for this card:

Windows Vista/XP
ati56win2kxp.exe document.getElementById("downloadlatestimglink").innerHTML=" Windows Vista
"; 6.14.10.6542 Windows Vista/XP
ati56win2kxp.exe document.getElementById("downloadlatestimglink").innerHTML=" Windows Vista
"; 6.14.10.6542

You can get this driver from http://www.radarsync.com/driver/d261215-radeon_7000_series

Install this set of drivers and reboot.

This should fix your problem.

Download the latest drivers for XP or Vista

Note: If you can't find Vista drivers for Vista use XP drivers.

Uninstall the driver from XP or Vista.
If you have PCMICA adapter card in laptop remove it.
Reboot the PC

Note: If the network adapter is built-in laptop or PCI (desktop) leave it along.

Re-install the drivers and wait for the driver to tell you when to install the device if you have this option and don't have PCMICA card adapter for wireless.

If the card still doesn't work it could be faulty or OS is corrupted and needs to be re-installed. (this would be the last step to fix the problem)

Seems like your VISTA upgrade didn't sucessfully upgrade itself from XP to VISTA. Seems like M$ update program detects your OS as XP and tries to install the SP3 for XP. VISTA only has SP1 released. Its currently stuck in a loop that it doesn't know what to do. Restart your laptop into safe mode by pressing F8 before the VISTA loading page comes up and go to Safe mode and backup your data and use the ACER RESTORE CD OR ACER RESTORE METHOD to help you reload your system back to factory defaults then upgrade back to vista without install any updates or connecting it to the internet.

This is my best solution to get you out of this weird and unusual situation.

When you say Reboot, I assume you mean re-install Windows XP. Many issues can occur if you do not install the drivers properly after installing Windows. The proper order is as Follows:

Notebook System Software
Chipset Utility
Video Driver
Audio Driver
Network Driver
Wireless Driver
Touchpad Driver

Also after installing Windows and the drivers, you'll need to go to Java.com and install Java, then adobe.com and install the latest Flash and Shockwave Players.

It is also recommended that you have the latest BIOS flash of the system. The current bios version is A09

http://support.dell.com/support/downloads/download.aspx?c=us&l=en&s=gen&releaseid=R109329&SystemID=INS_PNT_6000&servicetag=&os=WW1&osl=en&deviceid=6999&devlib=0&typecnt=0&vercnt=3&catid=-1&impid=-1&formatcnt=1&libid=1&fileid=142094

All drivers can be found here:

http://support.dell.com/support/downloads/driverslist.aspx?c=us&l=en&s=gen&os=WW1&osl=en&catid=&impid=&SystemID=INS_PNT_6000

Its not eskom. My PSU is ATX2 24pin with 2 x PCIE adapters and 540W, Cool Gold aluminium and orks fine. One in a wile I boot he games and they run perfectly for hours and 925 time it just reboots

dont remov usb 2 support from intel . u just go to acer.com then selec ur region . then support > driver downlaods chose ur system type and download proper drivers approved by acer . those drivers wiill work fine