(20點急問)用用下電腦突然黑mon，但機未熄，boot機後先開得返，究竟係咩事﹖

90% SVGA card or SVGA chip problem.
5% XP crashed.
5% MainBoard fail.
1. Try unplug the SVGA card and clean the gold fingers by using rubber.
2. Also test the SVGA chip fan, clean the fan also.

If still cannot fix, try to look at the MainBoard to see if any components brust, such as capaitor.

If fail components were found, need replace MainBoard!

If no fail component, you may need to re-install XP to fix the problem.
Before re-install XP, try download the IDESCAN.exe to check the HDD. To see if your XP crashed because of HDD failure.
Search the IDESCAN from yahoo and download the IDESCAN.exe version 1.0 to a boot disk.
Boot up your PC and test the HDD.

應該係硬件壞
試下問朋友借 Cpu 主機板 Ram Display 火牛等等試一試先
跟住再買返壞左既零件
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試完以上既方法都唔得.可能係電腦有暗病.就要比人整,無謂花時間自己試,又攪唔掂
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有三大可能, mon, display card, power supply.