i have vista home premium 64 bit installed on sony vaio fw 170(ram-4gb). Few days ago it got infected with agent2,ofg. Avg removed the threat. But ever since then, it is crashing/freezing/hanging randomly. I thought it might have more infections so I scanned with a-squared, malwarebytes and sophosrootkit: no infection was found.
i used a registry optimizer, disk cleanup, kept the system in high performance.... did everything i could. But the problem is still there. it still crashes suddenly-without any apparent reason.