I had replaced the power supply once before so i thought that was the cause.
Dell studio desktop 540 power supply.
Genuine oem switching power supply unit psu for dell optiplex 390 790 990 3010 inspiron 537s 540s 545s 546s 560s 570s 580s 620s slim desktop form factor apevia tfx ap300w standard flex atx 300w power supply 115 230v ac 1 x 20 24pin main power 1 x 12v p4 3 x pheripheral 3 x sata 1 x floppy.
I ve unplugged all the cords and held the power button on for 30sec still won t turn on.
Li sun l300pm 00 300w power supply replacement for dell optiplex 7010 9010 inspiron 3847 519 530 537 540 541 545 560 580 620 660 studio 540 545 precision t1500 t6100 t1650 vostro 201 230 260 270 4 4 out of 5 stars 53.
I have a dell studio 540 desktop running windows 7.
However i bought a replacement power supply diablotek which was identical to the first power supply but after that was installed it was still dead.
Recently the entire system shut down while i was using it.
Power supply issues desktop studio 540 hi the issue seems that your power suppli is dead and you need to change one i know a store sells dell studio 540 350w power supply 0g848g ps 6351 2 it only need 50usd that may help you.
Make offer dell studio 540 540s 300w atx power supply unit xw598 0xw598 dps 300ab 24 a new pc power supply upgrade for dell studio slim 540s slimline sff computer 29 99.
It won t turn on.