Hi, I have a problem with my pc. my computer screen turns red in colour or goes blank sometimes. I cannot say when it happens. my computer configurations are windows 7, 1gb ram,intel pentium 4 processor. I unplugged all the wires fixed them again,cleaned my ram,then its works normally. sometimes it takes more than a few times to get this right. I gave it for repair,by the technician said its working perfectly. but after a few days,I am facing the same problem.