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I have 8 years old setup. Intel E5700 3.0 GHz dual core 4 gb ram Gigabyte g41 series motherboard Integrated graphics Windows 7 Ultimate The setup was unused for last one year. when I started it again then cmos failed. So I replaced battery and cleared cmos. This turned it on.but now it has display problem. I have attached picture for reference(ignore the white circle, that’s my camera flash). It works fine for few minutes. The cooler the atmosphere, the longer it works.

I have checked PSU. It works fine. CPU runs at ~87 °C before automatic shut down. I don’t know how to check video card as it is integrated. I took it to local service guy, he says it is bad RAM. I tried to run memory diagnostics but it doesn’t give me enough time. Please tell if there is something I can do. Thank you.

@prashantpatel could be bad RAM module as well as a bad GPU. You can either replace your memory module or install a new video card. There is no way to test it unless you have another machine to insert the parts to test by exclusion.

Loose RAM cards? If you remove RAM while the system is running, and plug it back in, then it’ll display garbage like that. (Accidently pulled out a RAM stick on a laptop. Never made that mistake again). Try reseating your RAM, and see if that fixes it. Or maybe get a different stick and see if boots fine. Good luck!