Extreme Audio and Video lag on GTX650

[MysticalAura360]

I had built this PC a while back , (2013 March) , it's specs are-

Intel i5
Gigabyte GTX 650 OC 2GB
8GB RAM
600W PSU
Windows 8

It had no problems running games like Mirror's Edge, DmC, Far Cry 3, Battlefield at High to Highest settings at around 50-60 FPS generally. But after some time , I started experiencing lag spikes in all of my games. Naturally, I assumed that a virus had infected my PC and after a lot of scanning for viruses, nothing was found. I proceeded to reformat my HDD and install windows 8( now 8.1 ) on it. For a while it was fine. Then again, just around Christmas , I started encountering extreme audio and video lag in all my applications . (Surgeon simulator ran at 18 FPS at lowest settings at resolution 1360x768) . Thus I took my PC apart and cleaned out all the dust on it. This did not help . So finally , I resetted the BIOS by taking out the CMOS and putting it back in again. I also fully reformatted my HDD and updated the BIOS. However , after the install of Windows and (naturally) all my games, I am experiencing more lag than ever. All games run at an average of 5 FPS. Audio is also extremely laggy and distorted . Which part of the PC is the cause of the lag? Could it be the PSU?Can anyone suggest any other solution or method which will help prevent lag? Thanks in advance!!

BTW, if you need more info about the specs of the PC especially about the motherboard and PSU, I will post info on other parts of my PC.

P.S- I can update any part of the PC I have to.

 

[James Mason]

I wonder if it's your motherboard that's bad... or a bad PSU...

What model of PSU and MOBO do you have?

 

[MysticalAura360]

I wonder if it's your motherboard that's bad... or a bad PSU...

What model of PSU and MOBO do you have?

I have Gigabyte GA-H77-DS3H as my MOBO

I don't know the brand of the PSU I have, just that it's 600W. I must search for its packaging to see its brand.
Is there any way I can find the brand of my PSU from the OS or will it be written on the PSU?

 

[James Mason]

I wonder if it's your motherboard that's bad... or a bad PSU...

What model of PSU and MOBO do you have?

I have Gigabyte GA-H77-DS3H as my MOBO

I don't know the brand of the PSU I have, just that it's 600W. I must search for its packaging to see its brand.
Is there any way I can find the brand of my PSU from the OS or will it be written on the PSU?

There should be a sticker on the PSU somewhere that will reveal it's model number, if it doesn't haven't one, that's even further suspect that it could be the culprit, as a cheap low quality PSU can cause all kinds of issues after a few years of use, assuming it hasn't outright ruined your other components.

 

[MysticalAura360]

I wonder if it's your motherboard that's bad... or a bad PSU...

What model of PSU and MOBO do you have?

I have Gigabyte GA-H77-DS3H as my MOBO

I don't know the brand of the PSU I have, just that it's 600W. I must search for its packaging to see its brand.
Is there any way I can find the brand of my PSU from the OS or will it be written on the PSU?

There should be a sticker on the PSU somewhere that will reveal it's model number, if it doesn't haven't one, that's even further suspect that it could be the culprit, as a cheap low quality PSU can cause all kinds of issues after a few years of use, assuming it hasn't outright ruined your other components.

Is there anyway I can test my power source to see if it's faulty? If it's faulty, can you suggest some good PSU for me to buy (good brands, reasonable power)

Thanks

 

[James Mason]

You got the latest drivers for your graphics card right?
http://www.gigabyte.com/products/product-page.aspx?pid=4360#dl
And you updated the drivers for your motherboard?
http://www.gigabyte.com/products/product-page.aspx?pid=4146#dl
How old is your HDD? And what's its model number? You should be able to find out by looking in device manager.

There's no way to test a PSU without the proper electrical tools. But low quality PSUs can be the cause of many problems. Like this is the PSU I would recommend, but we don't know if that's actually the issue: http://pcpartpicker.com/part/seasonic-power-supply-ssr550rm so lets not spend money if we don't have to.