this machine is 3 yrs old never been opened and just las t month start to display this message during boot up .
Please advise on this matter. i can hear fan running inside the machine so it works.
What form factor is this 745 (mini-tower, small form, desktop...)?
There may be more than one fan. You probably have one on the CPU, plus one in the power supply and maybe a case fan too. So you need to figure out how many there are and if all of them are working.
The others may have to work overtime to compensate for the one that's not working, and that's not good either.
If this answers your question, please click Yes
Forum Member since 2004
I am NOT a Dell employee
all 3 fan's are working.
this is the small form, model.
So what is the problem?
i saw another post with similar problem and it seems nobody can figure this out.
It is as BIOS setting?
Please Advise ASAP
Fans on many (most?) Dell systems have a sensor in them. So it's possible that fan sensor failed. Other possibility is that the motherboard failed.
You might check the cable from fan to motherboard to make sure it's firmly/correctly connected to the motherboard. Be sure to power off, unplug from the wall and press/hold power button for ~15 sec before opening the case and fiddling with the hardware.
If the system is under warranty, contact Dell Tech Support for repairs.
I have the same problem with three (3) OptiPlex 745 PCs.
They were shipped without the heat sync fan which is located under the hard drive. When I inquired about this with Dell, I was told that they would not send replacement fans, because they didn't have enough to supply the new computers being built that needed them.
Before I realized that the fans were missing, (the older models didn't have fans in the hard drive case) I purchased new power supplies for the PCs.
Nobody at Dell will talk about this and now that the computers are out of warranty, I guess I'm up the proverbial "creek".
@SirTerry - You responded to a thread that's 2 years old.
Yes, I realize this thread is two (2) years old. I just want to reiterate that some folks are still having this problem and let them know that, unless you find a private supplier for the heat sync fan. Dell WILL NOT help you.
In Ohio, I use LEK Computers on Main Street in Akron and BPI Computer Services.
Dell NH645 Hard Drive Caddy & Fan CM740 NY290 NJ793 TJ160
Report Unresolved Customer Service Issues here: Dell - Unresolved Customer Service IssuesI do not work for Dell. I too am a user. The forum is primarily user to user, with Dell employees moderating.