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Old 20-04-2019, 10:06 PM   #1
bedoklist
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Default PSU Query

My desktop casing has a cooler master 500W and board is still the very old dual core CPU. I have a 2TB HD (Win7) with a CD-RW still on the old cable connector.

The moment I put another 1TB HD (Win10) as slave and go BIOS setup, the 2TB HD is not detected. Once I disconnect the 2TB, no problem. So I can only connect 1 HD and not 2 tgt. So weird, the 500W supply should be able to power both HD, correct me if wrong.

Both as long as I connect only 1HD, no issue on booting up either Win7 or Win10.

From this issue, anyone know what is the actually problem. Power not enough or other problem.
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Old 21-04-2019, 12:13 AM   #2
elimmel
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Add up all the power requirements of your hardware as a gauge.
500w Psu not very much if need to power mobo, gfx, soundcard, 2 hdd, CD-R etc.

I always check here before buying
https://pcpartpicker.com/
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Old 21-04-2019, 10:19 AM   #3
bedoklist
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Quote:
Originally Posted by elimmel View Post
Add up all the power requirements of your hardware as a gauge.
500w Psu not very much if need to power mobo, gfx, soundcard, 2 hdd, CD-R etc.

I always check here before buying
https://pcpartpicker.com/
Thanks.

Going to try to put 2pcs of 1TB HD and see if BIOS able to detect both. If still can only detect 1 then most likely is PSU issue.
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Old 21-04-2019, 05:27 PM   #4
richardg
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sata drive?
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Old 21-04-2019, 06:35 PM   #5
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Quote:
Originally Posted by richardg View Post
sata drive?
Yes both SATA. Suspect the 2TB HD takes more power.
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Old 21-04-2019, 09:06 PM   #6
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Quote:
Originally Posted by bedoklist View Post
Yes both SATA. Suspect the 2TB HD takes more power.
5 1/4 inch drives?

is the sata power split from the same source?

to test if power issue, connect a ssd and see if can detect
ssd takes less power
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Old 21-04-2019, 09:50 PM   #7
bedoklist
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No SSD to try. I will try 2pc 1TB. Yes power direct from the PSU and also supply to other connectors.
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Old 23-04-2019, 12:23 PM   #8
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maybe you wanan take away the CD player first.
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