It is quite likely the power supply unit has failed. Typically it dies gradually over a short period of time making it harder and harder to start up. If it is MT any standard ATX psu replacement would do. I had one MT that had dead psu. I got a really old Dell dimension tower psu to replace it. On eBay you can get one for $15-20. If it is DT or SFF you have to get Dell proprietary psu small form factor.
It could be the power supply, the motherboard or even the front panel switch. There's no sure way of testing to see which one is the problem, just replacing parts with known good parts. Based on what you have reported if you want to do it I would start with the power supply. On the other hand, a 2007 era PC is really not worth investing $$ in it.
redxps630
9 Legend
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15.4K Posts
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November 22nd, 2020 12:00
It is quite likely the power supply unit has failed. Typically it dies gradually over a short period of time making it harder and harder to start up. If it is MT any standard ATX psu replacement would do. I had one MT that had dead psu. I got a really old Dell dimension tower psu to replace it. On eBay you can get one for $15-20. If it is DT or SFF you have to get Dell proprietary psu small form factor.
fireberd
9 Legend
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33.4K Posts
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November 22nd, 2020 12:00
It could be the power supply, the motherboard or even the front panel switch. There's no sure way of testing to see which one is the problem, just replacing parts with known good parts. Based on what you have reported if you want to do it I would start with the power supply. On the other hand, a 2007 era PC is really not worth investing $$ in it.
bradthetechnut
7 Technologist
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9.4K Posts
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November 23rd, 2020 18:00
Blinking amber power light means bad PSU. Steady amber would mean bad MB.