I suggest you try restoring the system. If you can't restore it, then it's a harware problem that only a qualified hands-on technician can attend to.
Restart the system and hit ALT+F10. This will begin restoring from the Aspire system recovery partition. You will be prompted to type six zeros as a security step. Type 000000 to proceed.
You will then see a screen to select your Operating System. Do this and hit enter and the recovery process will begin.