Can a bad power supply cause freeze ups?

By quantummechanic ยท 6 replies
May 14, 2009
  1. My computer randomly freezes up. Sometimes it reboots as well, but mostly it simply freezes up leaving me with no option but to cold reboot with the reset switch.
    The mouse, num lock light etc. nothing respond, audio loops.

    I took my motherboard for testing. Gigabyte says that it is A ok. I was wondering if a bad power supply could cause this? Or is it some other errant component?

    I have seen bad power supplies cause reboots, but can they cause freeze ups?

    Another totally unrelated question: How much do you recon is the optimal amount of ram for Windows 7 64 bit. 4 GBs or 6GBs? (Dont use this pc for gaming).
  2. klepto12

    klepto12 TechSpot Paladin Posts: 1,115   +9

    it could be the psu but it might be the ram man. also is the cpu getting to hot? windows 7 64 bit i would say 4gb is the sweet spot but a 6gb system would be great for a core i7 system.
  3. quantummechanic

    quantummechanic TS Rookie Topic Starter

    The CPU stays cool.

    I ran Memtest for 22 passes, so I dont think its the RAM.
    Still I will get 2 gigs more and test.

    These freeze ups are fairly infrequent. After say 3-4 hours of usage. But the interval is ramdom. Sometimes I have 8+ hours of uptime.
  4. klepto12

    klepto12 TechSpot Paladin Posts: 1,115   +9

    have you tried plugging the computer in to another outlet? if your on a surge protector it could be faulty
  5. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,742   +421

    To answer what was directly asked, absolutely they can, if a component can't get the power it needs bad things are bound to happen. Some components are more flexible on the range of voltages they can accept while others might cause something unexpected to happen. Electronics don't do well with unexpected results.
  6. quantummechanic

    quantummechanic TS Rookie Topic Starter

    I think I will change my power supply and surge protector.

    I used to calculate my power supply need. It comes to 177W [220W if I severly overestimate].
    Will a 300W supply be good enough for me?
  7. Rage_3K_Moiz

    Rage_3K_Moiz Sith Lord Posts: 5,443   +38

    Get a quality 350-400W supply to have some headroom. The Antec EA380 and Corsair 400CX are among the best choices in that range.
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