and fata say what is helpful ....

also if u have to screw it to the motherboard (which i dont think u do) try losening the screws ..

same thing with your motherboard to the case .. i did this once and the motherboard was actualy touching the case and the power was not going through ..

if none of this has worked and u had to use thermal pace to connect your cooler .. then u may have used too much paste .. in which case damages your motherboard and u will need a new one ..

only reason y i no these things is that i have built 2 pc now (first one cost me £1000 and second £1500) and did these things ..

i did not put my cooler on tho but i have herd this problem from multiple people ..

hope this helps

kind regards

Blade / Dan

You helped him so muchhhhhhhhhhhhhhhhhhh
....

Kris tell more exact about ur problem. PC wont start or the CPU Cooler? What motherboard do you have? Why u have cheanged CPU cooler? Gimme model of new CPU cooler.

Need this info for helping

ich hab den kühler ausgetauscht weil mein alter die 4 kerne nicht unter 65° grad bekommen hat.
ich hab jetzt nochmal geguckt , mache ich strom an läuft alles aber bild kommt nicht , wenn ich dann nochma auf den knopf drücke fährt er ja hoch aber kein internet zugang

wäre es da ratsam alles neu zu installieren bzw , betriebssystem treiber usw . ?

Motherboard ASUS PQ5D TURBO
Graphic Card GTX 260
cool Alpenfoehn Hunchback (out had to build so minboard and back plate attached underneath, then turn everything back built)
power supply Enermax 425W
2x2 ram (the new RAM yesterday also with built-in)
I've replaced the cooler because my old cores do not get the 4 degree below 65 ° has.
I have now looked again, I'm current on all runs but picture is not, then when I press the button again it goes so high but no Internet

would it be advisable to install everything again or, operating system drivers, etc.. ?

PS fata cpu cooler start but i cannot see anything

only what i can say at last : thanks for the wonderful time and happy gameing guys :((

If PC starts and u dont see anything.. see (plug out and plug in) again ur GTX 260 (niec card btw had it to before rlly nice).

If this doesnt help try inserting Windows installation CD if still black screen no point to reinstall windows wont help.

Last thing i would do... Ive made PC myslef and ive made one misstake... Try takin out one ram and just leave one later switch them check if this will work with one ram bloack <= most passible

when i start pc i cant see anything when i press again start button all load and i see desktop , but the next problem is now i cant go in internet .......

and my cousin helped me to bulit the pc ......

Strange... May be some integreed network card insuee. U tried to reinstall motherbords network drivers? Asus is nice supported with them www.asus.com (myself got an asus motherboard as u can see its perfect)

You can try restore ur BIOS settings btw