Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Fan at full speed after rebooting!!!

25 Sep 2012   #1

Windows 7 Professional 64 bit
Fan at full speed after rebooting!!!

Has anyone found this behavior too?
After rebooting (this happened a couple of times...with the hdd and today with the ssd so it should not be their fault) the windows or toshiba screen do not appears only a black screen, no disc activity and the fan works like crazy!!! I stop this after 1-2 minutes because nothing happen!

My laptop is a Toshiba Tecra R840-16J (Win7 Pro 64 bit)

My System SpecsSystem Spec
25 Sep 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 x64

This is a newer system so it seems unlikely it's clogged with dust.
I did once have a desktop system that would do this, I finally traced it to a setting in the bios called 'quiet and cool' disabling the setting stopped it from happening.
My System SpecsSystem Spec
25 Sep 2012   #3

Windows 7 Ultimate x64

If you are confident in your cooling system, and that you'll have no problems overheating you can set your Cooler to "passive" which will keep it from running at max all the time. It will still respond to higher temperatures and rev up, just not as often. You can do so by going Start > type power options > click on change plan settings > change advanced power settings > open the processing power management tab > open the cooling policy > choose passive instead of active.

I had to do this when I got my AMD FX 8150 because the stock cooler it comes with is completely obnoxiously loud.
My System SpecsSystem Spec

25 Sep 2012   #4
Microsoft MVP

Windows 7 Ultimate X64 SP1

It appears some hardware has failed, if I understand the system is not booting at all?
My System SpecsSystem Spec
25 Sep 2012   #5

Windows 8 Pro (32-bit)

Quote   Quote: Originally Posted by Britton30 View Post
It appears some hardware has failed, if I understand the system is not booting at all?
Now that you mention it, it does seem like that. The title only mentioning fan speed issues threw me off.

Before the black screen, is there anything that shows up? Something with a toshiba logo?
If the screen is black starting from the moment the power button is pressed, then the laptop is most likely defective or otherwise irreparable.
My System SpecsSystem Spec
26 Sep 2012   #6

Windows 7 Professional 64 bit


thanks for all the comments!
Yes, there's just a black screen with the fan at max! No disc activity! (but I'm not completelly sure that there's no logo appearing at startup at least for a short period! I think it starts with a black screen but I'm not 100% sure!)
After power it off (pressing the on/off the laptop will shut down) and power it on again, everything is normal again, with a normal boot no less! This only happened a couple of times!

My System SpecsSystem Spec

 Fan at full speed after rebooting!!!

Thread Tools

Similar help and support threads
Thread Forum
Why do I need to restart to get full Down/UP speed?
A few months ago, I played with my services and sped my (Desktop) computer up. I'm not exactly sure what I did, but when I start up my computer (aka cold boot), my download speed doesn't even reach 1 Mbps. I forget what the upload speed is. My FiOS plan is 15 Mbps Down, / 5 Mbps Up. When I...
Network & Sharing
Fans running full speed
Hi Switched on the pc this morning Fans running at full speed ... switched off and restarted two or three times with the same effect. Looking inside the pc the cpu was clean and virtually free of dust and connections were fine.I started the pc again and ran pc wizard to check temperatures (quad...
Hardware & Devices
got new Ram... not sure if its running at full speed...
ok i got new ram today Vengeance® — 16GB Dual Channel DDR3 Memory Kit (CMZ16GX3M4A1600C9B) Memory Type: ...
General Discussion
Need for speed the run full screen
I cant play the game in full screen it shows only in windowed mode. i cant put mouse cursor as well in window. tried changing the resolution of the game but it doesnt change if i set it to low resolution i cant see anything but can hear the sound
How to know if CPU is running at full speed ?
Hey guys, I'm a 3D artist, and I'm currently rendering out a whole load of frames. I'm using a reasonable, Sony Vaio laptop for the task, which has an Intel i7-720QM, however I'd like to know what CPU speed it's currently operating at. I know that it says it runs at 1.6Ghz as standard but then...
Hardware & Devices
HIGH speed USB hub running at FULL speed.H
after dealing with PCI usb hub. i went and got external usb hubs and yes it worked on windows 7, but only FULL speed, my cam went from fast to laggie, iphone connect to usb hub had a message " it can perform faster if connect to a high speed port" , i check under device manager and it says " the...
Hardware & Devices

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 01:33.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App