Is 500W enough?
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Plusnet Community
- :
- Forum
- :
- Other forums
- :
- Tech Help - Software/Hardware etc
- :
- Re: Is 500W enough?
Is 500W enough?
28-01-2009 6:06 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Please help.
Thanks in advance.
Re: Is 500W enough?
28-01-2009 6:11 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
http://support.asus.com/PowerSupplyCalculator/PSCalculator.aspx
Mike
Re: Is 500W enough?
28-01-2009 6:20 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Re: Is 500W enough?
28-01-2009 6:35 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
All I can suggest are things you've probably already done, like religiously checking all cabling, reseating the memory, resetting the BIOS via the jumper, trying an alternative known working psu and, if you've got 2 dimms fitted, then try them separately. Also check that the case mounting pillars are all lining exactly up with the motherboard mounting holes and aren't touching the board anywhere else and causing a board to case short.
Is it a new cpu or one pulled from a previous board?
Mike
Re: Is 500W enough?
28-01-2009 6:56 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
And those online PSU calculators are nothing short of misleading, as you've discovered.
For that motherboard I'm guessing you need at least 18amps on the +12v rails maybe more if you have a graphics card that needs input from the power supply. And that has to be a dedicated input as well, not slaved from a another connection.
Re: Is 500W enough?
28-01-2009 7:04 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Anyway, the PSU is a known working one, this mobo was bought as an upgrade. One thing i have noticed, the board does bend slightly under the weight of the cpu heatsink & fan. But it's not hitting the case. Going to have to take apart my main PC to get at another PSU for testing. If that fails, it'll have to go back
@stickymick:
the PSU does indeed have 18a on the +12v rails and the graphics will be the onboard one 'til i can get it booted
Re: Is 500W enough?
28-01-2009 7:25 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
The symptoms you describe are an exact copy of what happened to me about 18 months down the line after I built my PC. I upgraded from an nVidia FX5500 graphics card to a 6600GT. Booted up one morning and it froze on the POST screen. subsequent reboots after that produced nothing but a black screen and drive lights permanently lit and fans spinning. I RMA'd the motherboard to ASUS and it came back with a clean bill of health. I didn't have a spare PSU so it had to go to the shop. Sure enough it was the PSU. I'm getting exactly the same thing now that I've upgraded to a 7600GT, but it will boot after a few tries.
Re: Is 500W enough?
28-01-2009 11:15 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Re: Is 500W enough?
29-01-2009 7:16 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
And can I also assume that using a grounded anti static mat would be safer than newspaper?
If it works outside the case fully fitted does that mean it's shorting on the case somewhere? Does anyone know where I can get a cardboard case?
Re: Is 500W enough?
29-01-2009 7:46 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
As others have suggested, first port of call is another PSU trial. If that also fails then it's probably the motheboard. I have heard of brand new boards being defective in the past. Its rare but it does happen. A friend of mine years ago had it happen... he wasn't happy and it took 2 of us to finally decide it was dead and tell him to take it back.
Personally though I would try at least 2 other PSU's in it myself. I inherited a 2.8GHz Celeron D machine from my local freecycle a while back. Nothing wrong with it other than the previous owner hadn't seated the CPU back into its slot properly. Anyway put that back, powered it up working fine! Took the PSU to bits and gave it a clean out... while holding it by the wires I accidentally dropped it. Didn't hit anything, it just hung from my hand dangling. No big deal right? Plugged back into computer, dead. I was trying everything for 2 hours until I finally tried another PSU and realised that in fact I had stretched a cable and snapped it internally! That is a very rare occurance for a cable to break inside its rubber shield.
Just goes to show that sometimes it really is worth trying that extra PSU as sometimes the working ones... don't work!
Re: Is 500W enough?
29-01-2009 9:51 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Re: Is 500W enough?
29-01-2009 9:57 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Quote from: jmart And can I also assume that using a grounded anti static mat would be safer than newspaper?
No, by the fact that it's grounded means that anti-static mats are conductive. From memory they are not directly grounded as there is a 1M ohm resistor in series.
Re: Is 500W enough?
29-01-2009 5:21 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
I was a naughty boy and took the lid off my PSU last night. Sorry I did now There's 2 blown caps in there, so I'm on an emergency PSU hunt.
But be warned: IT'S NOT ADVISABLE TO TAKE A PSU APART They can store a lot of power and just one misplaced finger can be fatal.
Re: Is 500W enough?
29-01-2009 6:50 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Same problem with both PSUs. Reckon it's RMA time.
Re: Is 500W enough?
29-01-2009 9:28 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Quote from: StickyMick But be warned: IT'S NOT ADVISABLE TO TAKE A PSU APART They can store a lot of power and just one misplaced finger can be fatal.
I second that... although I'm one of the very worst abusers of it myself. Just last week I had my PSU in pieces greasing up the buzzing fan. What makes me worse for it is I had it turned on, LIVE, running the computer while it was in bits. I really should at least wear rubber gloves... I've had several shocks in the past though.. never nice. Last one was getting a computer back from my partners brother. They stuck the plug together with sticky tape. I pulled it out of the socket, sticky tape gave way, my finger slipped straight into the plug and hit the live terminal for a split second before a knee-jerk reaction flipped it back out!
Camera flash circuits... now they're fun if you want to learn to fly Last time I hit one of those I tele ported 2 feet backwards and landed in the wall
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page