Here is what I found on these entries.
The RECGUARD entry is said to be protecting the Recovery partition of the computer... this is so you or anyone else doesn't mess with it. I would keep this safe guard active.
Instead of "deleting" these entries... I would use a program like Startup Inspector for windows... Startup Control Panel by Mike Lin or WinPatrol... these allow you to "disable" startup entries with the option to enable them again if you find you want or need them. Links to these program can be found in my signatire area.
I would caution you about deleting any of these items.
All the entries below can be disabled... and are not "essential" for the operation of the computer... please read the descriptions and you can decide. AppleSyncNotifier......C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleSyncNotifier.exe
(Apple Mobile Device Service) process can be removed to free up resources without compromising system performance.
Apple Synchronization Notifier (AppleSyncNotifier.exe) is a part of the MobileMe software, background service installed when you install or upgrade to iTunes 7.7 or later, or when you install the Apple MobileMe software.
The Apple MobileMe service and software enables users of iPhone and iPod Touch devices to have their emails and calendars synchronized on every device and computer that they use, whether it be the home desktop, the laptop, or the work computer.
You do not need it unless you have an iPhone or an iTouch iPod but that did not stop Apple from including it as an Service for all iTunes users.BD Agent......"C:\Program Files\BitDefender\Bitdefender 2009\bdagent.exe"
BitDefender Switch Agent. Startup background task whose role is to ensure that BitDefender continues to work properly and protect your PC when you have Windows XP and there are multiple users defined on your PC and Fast Switching is enabled (Fast Switching is the feature where you can switch to another user profile on your PC without first logging off the current user).
BDAgent.exe Recommendation : Down to end-user requirements. If you do not have Windows XP, then you can disable this program on the Startups tab. Ditto if you do have Windows XP but Fast Switching is not enabled or you are the only user defined on this PC. In any other scenario, leave this task enabled. Others say . If you disable it, you will not be able to see Virus alerts and Firewall questions.BitDefender Antiphishing Helper......"C:\Program Files\BitDefender\Bitdefender 2009\IEShow.exe"
IEshow.exe is actually the Anti-Phishing toolbar from Internet Explorer. If you don't need it, you can remove it from the startup list.GrooveMonitor......"C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe"
GrooveMonitor.exe is associated with Microsoft Office Enterprise 2007 and is part of the Grove 2007 application for business communication between small groups. If you are not using this application you can end it in task managerHPBootOp......"C:\Program Files\Hewlett-Packard\HP Boot Optimizer\HPBootOp.exe" /run
HPBootOp is not necessary for startup. It is usually run infrequently and can be started manually if needed. iTunesHelper......"C:\Program Files\iTunes\iTunesHelper.exe"
You have iTunesHelper.exe running at Startup. iTunesHelper.exe is a process belonging to Itunes MP3 streaming tool by Apple which allows you to play MP3's.
This process speeds up iTunes when it starts, and the program also monitors for connected iPod devices. This program is not required to start automatically as you can start it manually if you need it.NvCplDaemon......RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
NvCpl.dll,NvStartup initializes the clock and memory settings on nVidia based graphics cards. Provides icon in Control Panel. Enable if you overclock your card. This program is not required to start automatically as you can start it manually if you need it.RTHDCPL......RTHDCPL.EXE
rthdcpl.exe is a process belonging to the Realtek HD Audio Control Panel and is bundled alongside Realtek sound cards and audio hardware. Non-essential...SunJavaUpdateSched......"C:\Program Files\Java\jre6\bin\jusched.exe"
It checks with Sun's Java updates site to see if newer Java versions are available. This program is not required to start automatically. You can do this manually by visiting http://java.sun.com
or just run the Java Plug-In Control Panel.Windows Desktop Search.lnk......C:\Program Files\Windows Desktop Search\WindowsSearch.exe
windowssearch.exe is a process associated with Windows Desktop Search Tray from Microsoft.\r It is used by the MSN Search Toolbar. This is a non-essential process.\r Disabling or enabling it is down to user preference.