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: Long Boot Time and BSOD from Non-Existent Device

01 Oct 2011   #1

Windows 7 Home Premium 64-bit
Long Boot Time and BSOD from Non-Existent Device

I have an issue with my wife's HP Pavilion Slimline s3330f computer running Windows 7 Home Premium 32-bit.

Recently, the boot times have been in excess of five minutes and on shutdown there is an occasional and seemingly random BSOD. The BSOD error message includes a reference to xcfev.sys - Address 8F1510A0 base at 8F150000; DateStamp 48Ce158e. This is preceded in the error message by STOP: 0x0000007E (0xC0000005, 0x8F1510A0, 0x8B276BCC, 0x8B276780). The xcfev.sys file is 593 KB in size and resides in:

C:\Windows\System32\DriverStore\FileRepository\xcbdav.inf_x86_neutral_8e8664e62708b91f , and in:


Apparently xcfev.sys is a ViXS XCode AVStream Driver Front-End Library sold by ViXS Systems Inc.

In addition, under Sound, video and game controllers in Device Manager there is a listing for VIXS Pure TV-U 48A3, which I believe is a TV tuner and which is indicated as working properly.

However, there is no TV tuner on the system, nor has there ever been, and I have never seen the device previously in Device Manager.

I suspect the long boot time may be the result of the system looking for a device that isn't there and the BSOD may be the result of the system trying to unload the same.

Thanks in advance for any help you can provide to eliminate this problem.

My System SpecsSystem Spec
01 Oct 2011   #2

Windows 7 Home Premium 64bit 6.1 Build 7601 (SP1)

You could make a Restore Point and then un-install all greyed-out devices. You can use Device Manager to do this:

Remove Old Drivers After Upgrading to New Hardware - How-To Geek

or there's a program called Ghostbuster that can do it. This link talks of both methods:

Remove old, unused, hidden device drivers in Windows with GhostBuster | The Windows Club

I've never used Ghostbuster but am going to take a look at it.

EDIT: After looking at Ghostbuster I'm not sure at all about it--it seems it might be an "all or nothing" hidden device remover, and I prefer to uninstall in a more orderly/controlled manner. So, "use at your own risk".
My System SpecsSystem Spec
02 Oct 2011   #3
A Guy

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium x64 SP1

That would indeed seem to be the culprit, see this thread:

A Guy
My System SpecsSystem Spec


 Long Boot Time and BSOD from Non-Existent Device

Thread Tools

Similar help and support threads
Thread Forum
Long Boot Time
Greetings All, I've had long boot time for a couple of days now. It jumped from ~2minutes to 40~ minutes. Firstly, it got stuck at the initial logo screen where it shows the choice of advanced boot menu and also BIOS for about 20 minutes, then it got stuck at "Windows Loading" for another 20...
Performance & Maintenance
Random BSOD, Screens can go Black at any Time. Long Boot Beep
Hello there, I'm having an issue with my desktop, at any random moment it seems to crash and I can't really figure out why. It doesn't matter what I am doing and it happens randomly, it could not happen for 5 hours then happen two times within 30 minutes. Also sometimes when I boot up my PC it will...
BSOD Help and Support
very long boot time
this is my evant viewer log +System -ProviderName] Microsoft-Windows-Diagnostics-PerformanceGuid] {CFC18EC0-96B1-4EBA-961B-622CAEE05B0A} EventID100Version2Level1Task4002Opcode34Keywords0x8000000000010000-TimeCreatedSystemTime] 2009-11-12T16:29:46.345035600Z...
Performance & Maintenance
Long boot up time
I put Win7x86 on a LGA775 P35 Q9550 system (new SSD). Anyway it had a wireless PCI card that didn't have official Win7 drivers. Got some bad advice and installed a driver/software package for some laptop wireless card that was supposed to work with this obsolete wireless PCI card. Anyway long...
Performance & Maintenance
Very very very very long boot time
Hello Everyone :) ... well i went from windows 7 64 bit to windows 7 32 bit since then my boot time is extreamly long .. sometimes it just stops and i have to restart it . if done a fresh install again but i have the same problem ? Can anyone help me thanks
Performance & Maintenance

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 00:53.
Twitter Facebook Google+