Computer (screen) flickering - graphics card? I think graphic card may be integrated (soldered) to the mother board - but perhaps I could upgrade/add another graphic card to it?

Darn, I just upraded it to 16 gigs of ram and a 1 gig SDD drive.

Flickers while using Firefox browser - maybe during other times, will have to observe it to tell.... Seems like I live in Firefox browser though.....

Its an HP Elitedesk G1 small form factor computer - fairly old....

Not major flickering. Usually if I restart computer, it will be fine....

Comments please.

Regards,

Michael

Michael Piziak,

First make sure that the monitor cable is firmly connected at both ends (it probably is).

Next, connect the PC to a fully-functioning monitor with a VGA port and see whether this screen flickers.

If there is no flickering, your own monitor is faulty.

If there is flickering, your PC has a graphics problem. The G1 has integrated graphics so you need to either replace the motherboard or add a cheap graphics card.

Agree with all of the testing ideas here, the two more ideas I'd add: firstly: CRT monitors, and older CFL-based LCDs, may flicker if your incoming power is fairly noisy. You may want to try moving the monitor and PC to another part of your home/office/wherever-you-are as part of the testing too, before writing it off completely. I haven't observed newer LED-backlit displays doing this (but its also been a few years since I've had awful quality power). Secondly: if you can, try swapping the cable that goes from the PC to the monitor for another one - cables do go bad too.

My reading of https://www.cnet.com/products/hp-eli...gb-e7c99awaba/ says there are no expansion slots in which to put a graphics adapter. The HP Elitedesk G1 small form factor computer's IGP is on the CPU die, so only a CPU change to an i7 could change it, which isn't very likely to be enough different to be worth the investment.

Heat could well be a problem in an old SFF PC like this, so open it up, and remove any collected dust, especially on any fans and heat sinks, including within the power supply.

If this PC is in use with a VGA cable and CRT display, expend the effort to try a connection using a flat panel display with DisplayPort cable. Or vice versa. DisplayPort outputs can be used with HDMI display inputs using an inexpensive passive adapter.

The CPU family is Haswell, which may well be the family about which the most complaints in the past couple of years have been registered, though most seem to be about GT1 graphics, while the i5-4570 is probably GT2 or better. See e.g. here. I have two Haswells, but have encountered nothing to complain about.

Do you have a spare monitor or a friend who will lend you one for an hour or two for testing purposes?

It's probably worth it to rule out the monitor as a potential culprit.

Loo at Xorg log, dmesg, syslog. Run xrandr - try to change resolution. Xorg plus probably dmesg should detect hardware errors.