Dell optiplex 390 restarting on it's own?

Which of these is yours? Do you have the small form factor? 

http://www.engadget.com/products/dell/optiplex/390/specs/

Edit: The card will fit but it uses a DMS-59 connector which is not common. You would need an adapter for VGA output.

Edited by JohnC_21, 08 January 2016 - 05:10 PM.

The middle one SFF, I think the one on the right is a USFF.

See my edited post. It will fit but the connector is not common. 

That's just a regular DVI connector, my workbench monitor had dual outputs [DVI and VGA] so as long as I can use the pci card to test will be fine. That card should should work with this pc not so?

It's not DVI 

It's a DMS-59.

DVI - There is a blade on the the DVI male connector.

Ohhh, thanks for pointing that out, for some reason low profile cards with vga is not so common to find especially for cheap just for this test.

They do make adapters for converting to DVI but from what I have read DMS-59 carries two signals so you can power two monitors.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814129142

Yeah but I needed something very cheap only for this test.

You can get the cheap card from ebay but you will need the adapter. As I previously posted, put a hard drive in and install Linux Mint Cinnamon. See how it performs. That would at least give you an idea if it was hardware related.

Edited by JohnC_21, 08 January 2016 - 05:55 PM.

I have puppy linux, knoppix e.t.c, aren't those the same?

Those would work also. They are used for pulling data off a Windows computer but I thought a full distro install may give you a better idea on how the computer behaves. Puppy is not really intended to be installed on a hard drive but it can be. 

Oh I think I understand now, the linux I have is meant to work outside of the HDD but the one you mentioned works on the HDD so like a windows system.

Yes, you will install Mint to the hard drive. How much RAM is on the computer.

4gb I think.