Process Explorer Shows "error Opening Process"

New dell n7110/win7sp1x64.At startup on new machine from dell, process explorer (procexp64.exe) lists 81 processes running (seems like way too many - compared to xp with maybe 25 at startup). But which processes I can turn off is a question for another day. OK, read carefully, at least 15 processes in PE show " Path: error opening process". PID, CPU, Private Bytes, and working set columns are shown for these "problem" processes, but nothing after that, ie, description, company name etc. For all other listed running processes (with known paths), all info is shown in all columns. The problem processes include some important ones, services, crss, ism, wininit, winlogon, that must to be working for the computer to work, and everything seems to be working properly, and no cpu spikes or other weird stuff is happening. Right clicking properties on these problem processes, properties window pops up as normal, but shows "version: n/a, build: n/a, path: error opening process, no command line, no current directory, autostart location: n/a, Parent: non existent process (708), user: access denied. Again, this info can not be correct since the computer is working. And then, after a few minutes, another window pops up and says PE has stopped working, and closes the program. Now, if this was the whole story, I would go to sysinternals with this, but read on... Task manager running simultaneously with PE lists 83 processes running, more processes than PE, and also ~5 different processes than PE, and PE lists some processes running that TM doesn't list. So PE and TM show different running processes at the same time. How can that be? For the processes that PE shows "error opening", e.g., crss, etc., when I click properties in TM for the same process, sometimes I get the usual/normal pop-up window listing the path, and all the other data as normal, suggesting the process is working properly. But sometimes when I click properties in TM for the processes that PE shows "error opening", I get no pop-up at all, nothing for that process. So, IMO, it's not just a PE glitch, something is actually wrong here. This is a new machine, with PE the only 3rd party installation. I have installed several dell driver updates, but this problem occurred before I installed them. Also, remember PE and TM simultaneously list some different running processes and TM also fails to show paths, etc.