My computer locks up and won't boot. What do I do?

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the lights are on. no noise on start up .no screen no nothing. i suspect mother board. can you help.

computer wont go past e screen say's press f2 f10 wont let me do anything???????????????????

acer desktop. all was fine until i created a user account for my friends son. the first program he tried to run kept crashing with *app* errors and java errors, now it hardly boots at all and well it does, it hangs when i click on anything, and god forbid i double click on anything. i can still use the wifi for my laptop though, if that has any corrolation . i have since gone ahead and deleted his profile, thinking that could be the glitch. anyone had this problem or similar?

i have a toshiba laptop and installed a new harddrive but it won't load Vista and it loads Xp but then tells me no HD. The old HD crashed and won't work should i change the cmos battery

when i switch on my computer(CPU)the power goes up but no action taken on the monitor however monitor still on as well. i have changed different monitors.

pls advice.

this is for my husband but his system is not staying on and freezing so using my email add.His system freezes Sometimes after only a minute of startng up,sometimes just resets on its own have wiped hd and re installed but the problem still persists its driving him insane can anyone please help oh hes already run it through reg cure and virus checker

i just took out my 25ogb harddrive out my computer to put it in a new desk top but now the old computer wont boot up need help asap if u can help my plz hit me up ty

Hi, my Dell 5150c won't boot up at all when I hit the on button, the light/button which usually goes green, just flashes orange, my external hard drive comes alive as does the monitor, which then goes into standby after a few seconds.
Any idea's?

well u should call before u do anything

when i start my computer up the gateway icon comes up then it goes to a blackish blue screen the cursor might flicker but other than that...nothin....please help me!!

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