Computer screen keep flickering when starting up windows

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SUMMARY

The discussion centers on a computer screen flickering issue during Windows startup, attributed to a failing power supply unit (PSU). The user reported a drop in the +3.3Volt reading in the BIOS and identified a 240W PSU as insufficient for their nVidia GeForce FX 5600 graphics card. Recommendations from forum members emphasized the necessity of upgrading to at least a 450W PSU to resolve the flickering and system hang issues. After replacing the PSU, the user confirmed that the problem was resolved.

PREREQUISITES
  • Understanding of power supply unit (PSU) specifications
  • Familiarity with BIOS settings and voltage readings
  • Knowledge of graphics card requirements, specifically nVidia GeForce FX 5600
  • Basic troubleshooting skills for computer hardware issues
NEXT STEPS
  • Research the specifications and features of power supplies, focusing on wattage requirements
  • Learn about BIOS voltage monitoring and its implications for hardware performance
  • Investigate the compatibility of different PSUs with various graphics cards
  • Explore troubleshooting techniques for flickering screens and system hangs
USEFUL FOR

This discussion is beneficial for PC builders, hardware troubleshooters, and gamers experiencing similar issues with screen flickering and system stability related to power supply inadequacies.

darkar
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Recently, my computer screen keep flickering when starting up windows, but fine when in the Windows. However, the fickering will start again if i open some programes, especially games.

Just now, my PC hang again. When i in bios, i was alerted that my +3.3Volt has droped.

What is the problem?

My graphic card's error? or my P.S.U. is failing?

Btw, i m now currently using a 240 W PSU. I wonder can i just replace it with a higher power PSU. Will it cause any damge to my com?

Thank You.
 
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You need a better powersupply for sure! If you have any of the newer cards you should have at least a 450watt powersupply. What kind of video card do you have?
 
nVidia GeForce FX 5600
 
yes you most definintly need a new powersupply in my opinion, do you know where to purchase one localy, or you wanting to do this over the internet?
 
Oh, i can get it locally. Thx. I will try to replace this psu n see if the problem will be solve.
 
Okay! The problem seems to be solved. :P

Thx everyone.
 

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