Fuzzy screen when booting

[madautotech]

This is a work computer at my job. When it boots i get a multi color  with gray fuzzy. like when your old tv had to much static. it has a prime a320-k board a ryzen processor no gpu just on board graphics. Also it has a hdd with windows 10 pro os. What could cause this?

[Guest]

Which processor are you using? Does it have a G in the part number? 

Only the APUs and Ryzen part numbers with a G have integrated graphics. The board does not contain a gpu onboard.

[SpookyCitrus]

Was it working before and just recently started doing this or is this the first time boot after putting it together?

[madautotech]

10 minutes ago, ShrimpBrime said:

Which processor are you using? Does it have a G in the part number? 

Only the APUs and Ryzen part numbers with a G have integrated graphics. The board does not contain a gpu onboard.

its has a AMD A10-9700 radeon r7 cpu, power supply was replaced recently due to power to a cooling fan and hdd melted . was doing this problem before on the old power supply was damaged. new power supply is 80+. The pc was a prebuilt system been working for over a year this fuzz just started. you can see the mouse on screen in front of fuzz move it and all then after a minute of being boot snap back to a regular screen like it should be.

[madautotech]

12 minutes ago, SpookyCitrus said:

Was it working before and just recently started doing this or is this the first time boot after putting it together?

been together for over a year working fine just started  already re installed the cpu and ram. just trying to figure out if cpu hdd or board is doing this after the screen goes back to normal it work just fine until turn it off and boot the next day.

[Guest]

Check the cable?

Hate to say the board or chip has an issue......

[asquirrel]

@madautotech Does the monitor ever go back to normal? After 20-30 minutes, does it work like normal? Either way, the problem may be the same. The capacitors inside the monitor may have failed. You'd need to:

1. Open the monitor
2. visually check the capacitors to see if any failed
3. Order replacements (voltage and capacitance MUST be matched; it is dangerous to put a 20v cap on a 12v line and vice versa, putting a 450uF cap on a 420uF spot may not be bad, but it depends on what needs that cap there; some things will care a lot, some not at all.)
4. Desolder old caps
5. Insert new caps
6. Solder new caps
7. Snip wires on the end of the caps
8. Reassemble montior
9. profit

There are good and bad capacitor makers. https://www.badcaps.net/index.php tries to keep track of who makes good and bad caps. In general, Rubycon and Nichicon tend to make high quality stuff.

[madautotech]

1 minute ago, asquirrel said:

@madautotech Does the monitor ever go back to normal? After 20-30 minutes, does it work like normal? Either way, the problem may be the same. The capacitors inside the monitor may have failed. You'd need to:

1. Open the monitor
2. visually check the capacitors to see if any failed
3. Order replacements (voltage and capacitance MUST be matched; it is dangerous to put a 20v cap on a 12v line and vice versa, putting a 450uF cap on a 420uF spot may not be bad, but it depends on what needs that cap there; some things will care a lot, some not at all.)
4. Desolder old caps
5. Insert new caps
6. Solder new caps
7. Snip wires on the end of the caps
8. Reassemble montior
9. profit

yes goes back to normal after 2 or 3 minutes and works fine for rest of the day. and thank you i never thought about the monitor it self being the problem but its been here for ages so i will look in it .

[madautotech]

8 minutes ago, ShrimpBrime said:

Check the cable?

Hate to say the board or chip has an issue......

this is straight where my mind went. Here at my job i dont have the extra parts to swap around and test.

[Guest]

1 minute ago, madautotech said:

this is straight where my mind went. Here at my job i dont have the extra parts to swap around and test.

Bummer. Maybe a ryzen chip with a G. Most of them are under 100 bucks.

[asquirrel]

3 minutes ago, madautotech said:

yes goes back to normal after 2 or 3 minutes and works fine for rest of the day. and thank you i never thought about the monitor it self being the problem but its been here for ages so i will look in it .

I had a Samsung 144hz monitor that started doing something like that. It was vertical lines when the monitor was cold. After ~30 min it would stop. The 'fix' was to use 60hz mode while the monitor warmed up. I recently opened it and replaced the caps (some of them had indeed failed) and now I can run 144hz mode all day erreyday.

[madautotech]

thank you all for the help and input im swapping monitors first and see what happens over the next few days i will keep you updated on the fix.

[madautotech]

Update finally figured out what was wrong . There is a bios problem with windows 10 older update that caused the screen problem . I updated the bios and been testing it for 2 weeks so far no more fuzzy screen with clear mouse . So it's fix .