My computer screen randomly goes black?

My computer has been randomly shuting down, like it ran out of batteries the screen goes black ?! HELP?

• it goes black and then i need to click the on botton again and start all over! i dont know whats going on!!!!! is it a virus? my computer has blue screened a couple times in the past but all of a suden this has been happening and now its more often!

• Answer:

  It could be the result of any number of things: 1) Virus, malware, etc. Run an anti-virus & malware detection program. 2) Dust buildup in & around the CPU heatsink. Blow out the cooling exhaust and intake ports thoroughly with compressed air to remove as much dust as possible. You could also have a bad cooling fan. CPU overheating can cause that very issue you're experiencing. 3) Corrupt operating system. The XP operating system files are corrupted either from viruses or improper shutdown of the computer. You can try to repair the OS or completely reinstall it. 4) Bad hard drive. When hard drives begin to go bad, then can cause that exact same problem. Run the computer's built-in hard drive diagnostics (if it has any) or download one from the internet and run it. If it's bad, you'll need a new hard drive. 5) Defective memory. A memory module may be bad. Try reseating what you have and run any memory diagnostics you can. It may need to be replaced if bad. 6) Since you're running off the AC power only, then any power glitch can cause the problems you're experiencing. You could get a UPS to run off of to prevent any power issues. Also, if your AC power adapter plug is not making a good connection in the computer, it could cause those problems. 7) The system board is beginning to fail. Without a lot of diagnostics & testing, it's hard to say. Hard to say for sure where your problem really lies without diagnostic testing. You could have it looked at by a repair shop to see what they say. Best of luck.